Jar-closure.



PAT ENTED APR. 28. 1903.

W. E; BROWN.

JAR GLOSURE. APPLIOATION nun no. 11. 1902.

ITO MODEL.

ummuI a mwnu UNITED STATES PATENT OFFICE.

WILLIAM E. BROWVN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO B-W AUTOMATICJAR & BOTTLE COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OFCALIFORNIA.

JAR-CLOSURE.

SPECIFICATION formingpart of Letters Patent No. 72 6,629, dated April28, 1903.

Application filed December 17, 1902.

To all whom. it may concern:

Be it known that 1, WILLIAM E. BRO N, of

Los Angeles,in the county of Los Angeles and State of California,haveinvented certain new and useful Improvements in Jar-Closures; and I dohereby declare the following to be a full, clear, and exactdescriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

The object of this invention is to so form or arrange the sealing-ringor gasket of a jar or bottle closure that in forcing the latter home thegasket will spring into a groove or recessin the neck of the jar orbottle and not only serve to keep the contents air-tight,but alsoprevent the accidental loosening or removal of the stopper or closure.

A further object is to so form or arrang the gasket as to require atwisting action on the stopper to effect the disengagement of the gasketfrom the retaining-groove.

The invention will be hereinafter fully set forth, and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical sectional view ofportion of a bottle-neck with the stopper seated therein, 'the latterprovided with a gasket in accordance with my invention. Fig. 2 is anenlarged detail view of the gasket. modification.

Referring to the drawings, 1 designates a jar or bottle in the neck ofwhich is formed an inner annular groove or recess 2, the same being ashort distance from the edge of the neck. The side wall of the groove isbeveled, so that there will be greater depth at the top than at thebottom, the top and bottom Walls being fiat or horizontal.

In a circumferential groove in the stopper 3 is a ring or gasket 4:,preferably of rubber. This gasket is of peculiar formationthat is, itsouter surface 5 is tapered downwardly and inwardly, the upper edgeforming an approximately horizontal shoulder 6 at right angles to theneck of the stopper, While the lower edge projects to less extent. Theprojecting portion of the gasket conforms to groove 2.

Fig. 3 shows a'slight S eria1N0. 135,6Z6- (No model.)

When the stopper is'inserted within the neck of the jar, the gasket willgive and expand upwardly under engagement with the wall of the neck; butwhen the gasket comes into line with the groove 2 it will at at oncespring or snap 'thereint-o under the resiliency of the rubber, and theupper edge or shoulder will so contact with the groove that the stoppercan only be removed by a twisting action thereon similar to theextraction by hand of a cork from a bottle.

In lieu of tapering theouter face of thegasket substantially the sameresults may be obtained by providing the stopper with a tapered groove7, as shown in Fig. 3. This causes the upper edge of the gasket toproject outward, producing an extended ledge, the same as when the outerface of the gasket is beveled.

In order to insure the free passage of the gasket in the insertion ofthe stopper,the latter or the neck of the jar, or both, are moistened.For this purpose I preferably use liquid paraflin,although water willsuffice. By

I the use of paraffin the closure is rendered absolutely air-tight, allthe crevices being filled thereby. Ihave indicated the paraffin at 8 inFig. '1.

In ordento remove the stopper, it is necessary to twist the same untilthe shoulder edge of the gasket works free of the groove, whereupon thestopper may be readily withdrawn.

It will be seen that I have provided very simple and inexpensive meansfor automatically looking a stopper in a jar and preserving the contentsof the latterperfectly airtight.

I claim as my invention- 1. A jar or other vessel having a groove in itsneck, a'stopper, and a gasket on such stopper for entering said grooveas the stopper is forced home, such gasket normally projecting from saidstopper to a greater extent at the top than at the bottom, as set forth.

2. The combination with a jar or other vessel having a groove in itsneck, such" groove being deeper at the top than at the bottom and havingflat top and bottom walls, of a stopper and a gasket carried by suchstopper designed to be accommodated by said groove and having aprojecting portion of size and formation corresponding to the groove ofthe jar.

3. A jar or other vessel having agroove in its neck, a stopper, andagasket on such stopper for entering said groove as the stopperis forcedhome, such gasket being tapered on its outer surface, its upper edgeforming a shoulder at approximately right angles to the stopper, as setforth.

4. A jar or other vessel having a groove in its neck, a stopper, and agasket on such stopper for entering said groove as the stopper is forcedhome, such gasket being tapered on its outer surface, its upper edgeforming a shoulder at approximately right angles to the stopper, and acoating of paraffin,or its equivalent, between the stopper, the gasket,and the neck of the vessel, as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

WILLIAM E. BROWN.

WVitnesses:

GRAFTON L. MoGILL, F. S. MAGUIRE.

